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These tools are used, alone or in combination, to characterize the properties of paper in a number of ways.

For example, a qualitative analysis shows what materials are in the paper, fiber, ink; quantitative analysis measures how much.

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A forensic chemist can: * detect an alteration made with a different pen; * determine the age of a document; * determine the age of a particular ink; * determine when an ink was first commercially available; and * determine, at times, if additions, alterations or rewriting of records have occurred, and then if so, when it happened, who did it, where it was done, when it was done, what was replaced and who knew’ about it.

A forensic chemist is able to do more than a forensic document examiner.

Each of these approaches provides a set of facts about an artifact's condition, age or origins.

The method of choice for any given situation is determined by several factors, including: the objectives of the investigator (authentication, preservation, personal curiosity); the relative value of the paper (historically, legally, personally); and whether the information gained from destructive testing will outweigh the loss of material samples.

Forensic Ink Dating is the chemical analysis of inks to determine the age of the ink on paper, or the date of introduction of the ink used on a particular document. Author of many peer reviewed research articles and publications. Offices: San Luis Obispo, CA-GFS is a private forensic lab, specializing in ink dating, forensic ink dating, ink age, questioned documents, fraud, forgery, art age determination, ink, paper, handwriting, fingerprints, counterfeiting, piracy, crime scenes, Daubert and court preparation.

Ink Dating experts serve as expert witnesses and forensic consultants in Michigan legal matters, and provide expert reports and testimony for judges, attorneys, lawyers, law firms, insurance companies and government agencies in Federal and state court trials and arbitrations in Michigan.

Chemical analysis evaluates composition and p H; physical analysis measures gloss, strength, color.

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